Door-fastening.



N0. 773,579. PMETE@ NGVA 19% L. A. @E MAYO.

D003 FASTBMNG.

APPLIGATIGN FILED JAN. M, 1904" H0 MODEL.

hwg 26m ,a @MMD Patented November 1, 1904.

PATENT EETcE.

LOUIS A. DE MAYO, OF NEW YORK, N. Y.

DOOR-FASTENING.

SPECIFICATION forming part of Letters Patent No. 773,579, dated November1, 1904.

Application filed January 14:, 1904. Serial No. 188,983. (No model.)

To @ZZ 107mm, it may concern:

Be it known that I. LOUIS A. DE MAYO, a citizen of the. United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and ImprovedDoor-Fastening, of which the following is a full, clear, and exactdescription.

This invention relates to a fastening intended particularly for doors,but useful in other connections.

By means of my invention the door may be held securely locked or it maybe held so that it can be partly but not wholly opened, and by properadjustment of the parts by a person inside of the room to which the doorleads the catch may be entirely disconnected.

The invention also involves a novel construction by which it may beapplied either to right or left hand doors without in any way modifyingits construction.

This specification is an exact description of one example of myinvention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a perspective view showing the invention in use. Fig. 2 isan enlarged front elevation showing the lock in the position which itassumes immediately before taking the fully-closed position; and Fig. 3is a sectional plan view on the line 3 3 in Fig. 2, showing the arm intwo positions.

The apparatus comprises a keeper which is intended to be fastened to adoor and which is formed of a base a and an outwardly-projecting lug b,having therein two openings and b2 and terminating in avertically-disposed notched head Z13. The lug Z) projects diagonallyfrom the plane of the door, preferably toward the door-frame, and theopenings b and b2 are arranged at different distances from the base a.Ooacting with the keeper is the arm of the fastening or latch, which isformed of two parallel members c and c, spaced from each other, therebyto produce in the arm a longitudinal opening or slot. Said members c andc are connected at their-outer ends by a cross-piece 02, from which adownwardlydisposed hook c3 projects. At the opposite or inner ends ofsaid members c and c/ notches c* are formed, these notches lyingopposite each other to form an enlarged portion at the inner end of thesaid slot or opening in the arm. Formed on or fastened to the uppermember c of the arm are a series of lugs c5. Preferably three of theselugs are provided. Said lugs are spaced equidistant from each other andlie in the said opening in the arm. The members c and c are connected attheirinner ends by a pin d, which extends between them and is arrangedto turn loosely in a box or thimble c, which is placed between themembers of the arm. This thimble carries a stud e', which is arranged toturn freely in a platef. The plate is adapted to be fastened by screwsor otherwise to the frame of the door and has at one side of thethimblee astop-lug f which is preferably formed integral with the plate.It will be apparent that the arm is thus mounted to swing horizontallyaround the axis of the pin CZ and also to swing vertically around theaxis of the stud e within the limit set by the stoplug f', which is inthe path of the swinging thimble e and allows the arm'but a limitedvertical movement. By providing the stop as. above described the arm iskept from falling into a vertical position, thus holding the arm alwaysin convenient reach. 1f the arm with its two movements were to fall intovertical position, more time would be consumed in returning the arm toopposite positions than is required in a construction which provides,such as the present construction, for holding the arm always horizontal.When the arm is not in use, it may be simply swung -back away from thedoor, and it will then lie snugly against the wall out of the way ofpersons passing in and out of the door. It will be also apparent thatthe arm has this movement whether it extends rightward from the plate for leftward and that the stop acts in the same manner irrespective ofthe position of the arm. lt is this arrangement which adapts thisfastening to right or left hand doors. When the door is fully shut, theT- head 3 of the lug I) will then bein position to be received withinthe notches c'l of the arm IOO members, and said arm may then be swunghorizontally entirely clear of the keeper. It should be noted, however,that this movement is not possible except when the door is closed. lVhenthe door is to any extent open, the T-head L of the keeper is movedoutward of the notches el, and since the said head is longer than thewidth of the opening in the slot in the arm it will then be impossibleto disengage the arm from the keeper. I'Vhen the door is fully shut, theinnermost stud 05 may be engaged in the opening 7)', and the door willthen be securely locked. The door may be moved partly open, the lug thenrunning through the slot in the arm, and either one of the two outerlugs c5 may be engaged in the opening b2, thus locking the door partlyopen, and, if desired, the arm may be first wholly disengaged from thekeeper and then the hook c3 engaged with the walls of the opening Z22,whereupon the door will be held partly open, but may be released fromeither side thereof.

This invention may be used on ordinary residences; but it is especiallyuseful on the doors of state-rooms in ships. where it allows the door tobe locked securely or to be locked at any one of two or more partly-openpositions.

Various changes in the form, proportions, and minor details of myinvention may be. re sorted to at will without departing from the spiritand scope thereof. Hence I consider myself entitled to all suchvariations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent l. A door-fastening, comprising a keeper having' arecessed headed stud, an arm having an opening receiving the stud and aprojection adapted to fit in the opening thereof, and means for movablymounting the arm.

2. A door-fastening, comprising a keeper having' a recessed headed stud,an arm having an opening receiving the stud and a projection adapted tofit in the opening' thereof, means for movably mounting the arm, and anopen hook on the arm.

3. A door-fastening, comprising a keeper, an arm, means for mounting thearm to swing on crossing axes, and means for limiting the swingingmovement in one direction.

t. A door-fastening comprising a keeper having a stud with a recessintermediate its ends and a head at its outer end, alongitudinally-slotted arm, a part of the arm being formed with notchesincreasing the width of the slot, to permit the passage of the headthrough the arm, and a lug formed on the arm and projecting into theslot, to engage the recess of the stud.

5. A door-fastening comprising a keeper having a stud with a recessintermediate its ends and a head at its outer end, alongitudinally-slotted arm, a part of the arm being formed with notchesincreasing the width of the slot, to permit the passage of the headthrough the arm, a lug formed on the arm and projecting into the slot,to engage the recess of the stud, and an open hook at the outer end ofthe arm, the open hook also being adapted to engage the recess in thestud.

6. In a door-fastening, the combination of a plate having a stopthereon, a thimble or box pivotally mounted on the plate and adapted toengage the stop to limit the pivotal movement of the thimble or box, anarm pivoted to said thirnble or box, and a keeper coacting with the arm.

7. In a door-fastening, the combination of a keeper comprising a studhaving a recess intermediate its ends and a head at its outer end, anarm eoacting with the keeper and adapted to be engaged by the head onthe stud, to connect the keeper and arm, and a pin carried by the armand adapted to engage the recess in the stud and also to connect thekeeper and arm.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS A. DE MAYO.

fit-nesses:

ISAAC B. OwnNs, J No. M. RITTER.

